19957704

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1361}}^1$

素因数の和:1430

約数の個数: 64

約数和(自身を含む): 54915840

約数和(自身を除く): 34958136

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 47, 52, 78, 94, 104, 141, 156, 188, 282, 312, 376, 564, 611, 1128, 1222, 1361, 1833, 2444, 2722, 3666, 4083, 4888, 5444, 7332, 8166, 10888, 14664, 16332, 17693, 32664, 35386, 53079, 63967, 70772, 106158, 127934, 141544, 191901, 212316, 255868, 383802, 424632, 511736, 767604, 831571, 1535208, 1663142, 2494713, 3326284, 4989426, 6652568, 9978852, 19957704]

約数ペア:

[(1, 19957704), (2, 9978852), (3, 6652568), (4, 4989426), (6, 3326284), (8, 2494713), (12, 1663142), (13, 1535208), (24, 831571), (26, 767604), (39, 511736), (47, 424632), (52, 383802), (78, 255868), (94, 212316), (104, 191901), (141, 141544), (156, 127934), (188, 106158), (282, 70772), (312, 63967), (376, 53079), (564, 35386), (611, 32664), (1128, 17693), (1222, 16332), (1361, 14664), (1833, 10888), (2444, 8166), (2722, 7332), (3666, 5444), (4083, 4888)]